The today, tonight show was showing Fitch Catalyst and the benefits it has with fuel economy, smoother engine response and increased performance. I am tempted to have one installed for my Terri and was wondering if anyone have done it already.

I mucked around with a very similar product about 10 years ago, still got one fitted to my ute.
I could never feel the difference, fuel consumption remained the same, engine idle is still the same. I really don't think there is any noticeable improvements.
The money would be better spent changing all your lubricants to full synthetics & using Premium Unleaded fuel. Those fuel catalysts are very expensive.

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